Translocation Quiz
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5 questions, one answer each
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1. What is translocation?
- A. The loss of water vapour from leaves
- B. The movement of sucrose and amino acids in phloem from sources to sinks
- C. The uptake of water by root hairs
- D. The upward movement of water in xylem
2. What is a 'source' in translocation?
- A. A part of the plant that stores sucrose
- B. A part of the plant that releases sucrose or amino acids into the phloem
- C. A part of the plant that absorbs water
- D. A part of the plant that photosynthesises only
3. Which of these is most likely to act as a sink?
- A. A mature leaf in full sunlight
- B. A growing fruit
- C. The xylem in the stem
- D. The stomata on a leaf
4. In which direction does phloem transport substances, compared to xylem?
- A. Only upwards, like xylem
- B. Only downwards
- C. In either direction, depending on the location of sources and sinks
- D. Phloem does not transport substances
5. A potato tuber stores sucrose over summer, then in spring releases it to support a new shoot. What does this show?
- A. The tuber is always a sink
- B. The tuber is always a source
- C. The tuber can act as a sink at one time and a source at another
- D. The tuber does not take part in translocation